Abstract: An inkjet manufacturing process and device for color filters are disclosed. The invention includes an inkjet head module, a motion platform, an electric field generator, an optical detection system, and a control system. The motion platform can support a filter substrate and have relative motion with respect to the inkjet head module. The optical detection system provides a real-time positioning function so that the inkjet head module can correctly jet and paint ink droplets on the substrate. The electric field generator imposes an electric field on the ink droplets so that the ink droplets become homogeneous because of the electrocapillary effect. The invention avoids the usual design of an ink absorption layer, greatly increasing the accuracy and diffusion homogeneity of the ink droplet painting.

Abstract: An ink-jet printing method and apparatus for manufacturing color filters of the invention comprises an printing head module, a table, an air jet module, an optical system, and a controlling system. The table is used to support the filter substrate and move relative to the printing head module. The optical system is used for real-time calibration so the printing head module is able to precisely spray ink droplets to the substrate. An air jet head module is then used to accurately distribute ink droplets. The conventional absorb layer is not necessary. The precision of spraying and distribution of ink droplets are thus much improved over the conventional technique.

Abstract: The ink cartridge comprises a container formed with an inner space and a base plate provided with a port, a sealing mechanism used to fit in the port, and an ink supply needle used to connect the inner space and output the ink. Pluralities of capillary portions are formed on the inner sidewall of the port so as to keep the filter with ink. A positioning hole indented from one end of the sealing mechanism is used to align the ink supply needle, and a recess is provided at another end of the sealing mechanism so as to connect the inner space of the container. When the sealing mechanism has been fully inserted with the ink supply needle, the sealing mechanism clamps the ink supply needle and the ink received in the container can be smoothly transmitted via the ink supply needle. When the ink cartridge is pulled out of the ink supply needle, the piercing hole of sealing mechanism is rapidly converged and sealed the port, and then the stored ink can be kept in the container with no leakage.